Your height and weight are the main factors in determining the right size bat for you. If you're purchasing a bat for a child, it's a good idea to buy a bat that's one inch longer than necessary. That way the child can use it for more than one season. If you opt to do this, make sure you choose an extra lightweight bat. The weight of the bat should actually always be as light as possible for children. That makes it easier for them to bring around the bat when they swing it.

Length

Let's start with the length. Stand the bat next to the side of your leg. The knob should rest within your hip area.

Weight

To check out the weight, hold the bat straight out in front of you. If the end of the bat tips down right away, then it's probably too heavy.

From www.academy.com.

How do I choose a glove?

Overall, your glove should fit comfortably. You’ll know you’ve found the right fit when you can squeeze the glove and easily hold onto the ball. You want your glove to fit snugly, but it shouldn’t be so snug that it feels tight, but at the same time, you don’t want it flying off your hand when you run, either. Just try on a few different ones and see how they feel. When you find the right fit, you’ll know.

Most leather gloves require some break in time to make the glove fit comfortably. Some manufacturers create gloves that have that already broken in feel, though. If your glove isn't already broken in, check out ways to do it in How to Break In a Glove.

If you want to get down to the nitty gritty and determine your exact glove size, measure from the base of the heel to the top of the webbing along the index finger. Generally, t-ball players will wear an 8 ½” to 11 ½" glove, baseball players will wear an 11" to 12 ¾" glove, and softball players will wear an 11 ½" to 15" glove.

From www.academy.com

How do I take care of my bat?

Keep bats in good condition by following the care guidelines below. These guidelines are for aluminum alloy bats CU31 and higher:

Do not store aluminum bats in an extremely hot area, such as the trunk of a car, as this will weaken the aluminum.

Aluminum bats are sensitive to cold temperatures (below 60 degrees). Balls become denser in cooler weather and result in a harder impact with the bat.

To help prevent dents, rotate the bat with each trip to the plate.

Do not use bats in commercial batting cages. The balls are too dense.

From www.academy.com

How do I break in a new glove?

If you’re breaking in an all-leather glove, you should start out by tightening the strings either by hand or with a leather tool. Then apply the conditioner to the glove, working it between the fingers, across the back, and in the pocket. Bend and flex the glove to make sure all parts are coated. While the glove is still wet with conditioner, play catch with it and keep playing until the glove conforms to your hand. Then store a ball in the glove pocket and wrap it closed with an Ace bandage or rubber bands. This will help the pocket maintain its shape, and the conditioner will soften the glove. Keep the glove wrapped like this for about a week.

From www.academy.com

Should I put my glove in the oven to speed up the break in process?

There are lots of different kinds of conditioners, from oil, to foam, to spray. It’s up to you which kind to use. It's not recommended to put the glove in the oven unless the product you're using instructs you to do so.